Transformations of symmetric multipartite Gaussian states by Gaussian local operations and classical communication

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F14%3A33149932" target="_blank" >RIV/61989592:15310/14:33149932 - isvavai.cz</a>

Result on the web

<a href="http://journals.aps.org/pra/pdf/10.1103/PhysRevA.89.042331" target="_blank" >http://journals.aps.org/pra/pdf/10.1103/PhysRevA.89.042331</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevA.89.042331" target="_blank" >10.1103/PhysRevA.89.042331</a>

Result language

angličtina

Original language name

Transformations of symmetric multipartite Gaussian states by Gaussian local operations and classical communication

Original language description

Multipartite quantum correlations, in spite of years of intensive research, still leavemany questions unanswered. While bipartite entanglement is relatively well understood for Gaussian states, the complexity of mere qualitative characterization grows rapidly with increasing number of parties. Here, we present two schemes for transformations of multipartite permutation invariant Gaussian states by Gaussian local operations and classical communication. To this end, we use a scheme for possible experimental realization, making use of the fact that in this picture the whole N-partite state can be described by specifying the states of two separable modes. Numerically, we study entanglement transformations of tripartite states. Finally, we look at the effect our protocols have on fidelity of assisted quantum teleportation and find that, while adding correlated noise does not affect the fidelity at all, there is strong evidence that partial nondemolition measurement leads to a drop in telepo

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BH - Optics, masers and lasers

OECD FORD branch

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Project

<a href="/en/project/GAP205%2F12%2F0694" target="_blank" >GAP205/12/0694: Complex quantum correlations and their applications</a><br>

Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2014

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Physical Review A

ISSN

1050-2947

e-ISSN

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Volume of the periodical

89

Issue of the periodical within the volume

4

Country of publishing house

US - UNITED STATES

Number of pages

8

Pages from-to

"042331-1"-"042331-8"

UT code for WoS article

000335227500002

EID of the result in the Scopus database

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